National Vacuum Equipment 607 challenger series Replacement And Rebuild Manual page 11

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4� Remove the oil pump drive
key from the end of the rotor�
5� (Fan Cooled Only) Remove
the eleven (11) self-tapping
screws that fasten the fan
shroud "tin" to the pump� Re-
move the fan shroud support
connecting the fan shroud "tin"
to the rear endplate�
6� Remove the top two (2) bolts
that hold the rear endplate
to the pump housing and
replace with two (2) 3/8-16
threaded dowels� Once in
place, remove the lower six
(6) 3/8 hex bolts�
7� Remove the rear endplate,
gasket, and vanes�
607 Challenger Series | 11